Category: Hibernate

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Full HD Hibernate tutorial series [part 1] – Install Eclipse Hibernate and Derby database

Added by 4 years ago

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1. Install Eclipse and database Download JDK and install it Download Eclipse from eclipse.organd extract the zip file. Download db-derby database from Apache Derby website Download Hibernate from Hibernate.o...

Implement many to many relationship in hibernate

Added by 3 years ago

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Hibernate Many-to-many Relationships - Many to many example in Hibernate. In this example we have used xml metadata. Now we will learn many-to-many relationships. Let's try many-to-many example. The many-to-many ta...

Full HD Hibernate tutorial series [part 7] – Insert data into database

Added by 4 years ago

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public class TestEmployee{ public static void main(){ AnnotationConfiguration conf = new AnnotationConfiguration5-, conf.addAnnotatedClass(Employee.class); new SchemaExport(conf).create(true, true); ...

Full HD Hibernate tutorial series [part 2] – Configure Eclipse with Hibernate

Added by 4 years ago

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1. Create a "User library" Using top menu click "Window" -> "Preferences" -> Type user -> "User Librairies" -> "New" Click "Add Jar" -> "DerbyClient.jar" Click "Add Jar" -> Select Hibernate J...

Full HD Hibernate tutorial series [part 3] – Write hibernate.cfg.xml file

Added by 4 years ago

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Your hibernate.cfg.xml file should look like this <property name="hibernate.connection.driver_class"> org.apache.derby.jdbc.ClientDriver </property> <property name="hibernate.connection.url"> jdbc:...

Implement one to one mapping with Hibernate

Added by 3 years ago

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A one-to-one association is similar to many-to-one association with a difference that the column will be set as unique. For example an address object can be associated with a single employee object.... Let us devel...

Full HD Hibernate tutorial series [part 4] – Create Employee class

Added by 4 years ago

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The Employee class should look like this @Entity public class Employee{ private int empId; private String empName; @Id public int getEmpId(){ return empId; } public void setEmpId(int empId){ ...

Full HD Hibernate tutorial series [part 5] – Write a TestEmployee test class

Added by 4 years ago

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public class TestEmployee{ public static void main(){ AnnotationConfiguration conf = new AnnotationConfiguration5-, conf.addAnnotatedClass(Employee.class); new SchemaExport(conf).create(true, true); } }

Full HD Hibernate tutorial series [part 9] – More annotations

Added by 4 years ago

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How to give a custom name of a table? @Table(name="myTableName") How to give a custom name of a column? @Column(name="myColumnName") How to prevent an attribute in a class from being saved into database table? @T...

Full HD Hibernate tutorial series [part 6 ] – Create your own Schema

Added by 4 years ago

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Add this line to your hibernate.cfg.xml file <property name="hibernate.default_schema"> TESTSCHEMA <property> Using SQL scrapbook, execute this statement CREATE SCHEMA testSchema;

Full HD Hibernate tutorial series [part 13] – Create a compound key

Added by 4 years ago

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We want to make "userId" and "accountId" primary keys in the table "Account" Compoundkey.java @Embeddable public class Compoundkey implements Serializable{ private int userId; private int accountId; pub...

Implement one to many relationship with Hibernate

Added by 4 years ago

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The goal is to implement the one to many relationship: States id name States id name state States.java public class States implements Serializable{ (...) private id; pr...

Full HD Hibernate tutorial series [part 10] – Add a primary key

Added by 4 years ago

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How to add a UNIQUE field? @GeneratedValue //It generates a unique value How to add a UNIQUE primary key field and make it auto-complete? @GeneratedValue(strategy=GenerationType.AUTO) //It generates a uni...

Full HD Hibernate tutorial series [part 8] – Questions and answers about Hibernate

Added by 4 years ago

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What are the uses of @Entity and @Id tag? @Entity annotation indicates that the class should persist to the database. @Id annotation represents a unique primary key How do you tell Hibernate which classes are to ...

Full HD Hibernate tutorial series [part 14] – Inheritance mapping

Added by 4 years ago

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Project.java @Entity @Inheritance(strategy=InheritanceType.THEINHERITANCE) public class Project{ @Id @generatedValue private int projectId; private String projectName; } Module.java @Entity publ...

Full HD Hibernate tutorial series [part 11] – Create 2 tables from 1 classe

Added by 4 years ago

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1. Customer class @Entity @Table(name="Customer") @SecondaryTable(name="CustomerDetails") public class Customer{ @Id @GeneratedValue private int customerId; private String customerName; //customerAdd...

Full HD Hibernate tutorial series [part 12] – Create 1 table from 2 classes

Added by 4 years ago

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School.java public class schoom{ private int schoomId; private String schoolName; @Embedded private SchoolDetail schoolDetail; public SchoolDetail getSchoolDetail(){ return schoolDetail; } public...